based on that paper, my first guess would be that you’d need to winterize using ethanol to get rid of the fats and waxes you picked up.
IMO D-Linonene & A-Pinene both seem like great solvents after extracting with cold ethanol. Replacing hexane for brine washing would be great.
as would using them for crystallization. oh wait, that’s essentially what we do now…
or of course, to soften up your trichs before squishing (see: substitute for hexane).
edit: there is a graph here that illustrates the reason to use ethanol 1st. Iso vs ethonal - #76 by Photon_noir